CN112573623A - Continuous dynamic membrane system operation device and working method thereof - Google Patents
Continuous dynamic membrane system operation device and working method thereof Download PDFInfo
- Publication number
- CN112573623A CN112573623A CN202011439369.4A CN202011439369A CN112573623A CN 112573623 A CN112573623 A CN 112573623A CN 202011439369 A CN202011439369 A CN 202011439369A CN 112573623 A CN112573623 A CN 112573623A
- Authority
- CN
- China
- Prior art keywords
- backwashing
- membrane
- dynamic membrane
- water
- pressure value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 158
- 238000011001 backwashing Methods 0.000 claims abstract description 112
- 238000005374 membrane filtration Methods 0.000 claims abstract description 42
- 238000005406 washing Methods 0.000 claims abstract description 23
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 9
- 239000010865 sewage Substances 0.000 claims description 32
- 238000005273 aeration Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 9
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 239000011859 microparticle Substances 0.000 claims description 2
- 238000011070 membrane recovery Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The invention discloses a continuous dynamic membrane system operation device, which comprises a support membrane, a water inlet water collecting tank, a peristaltic pump, a water inlet, a water outlet water collecting tank, a backwashing water pump, a backwashing air pump, a backwashing water inlet, a backwashing water outlet, a backwashing water collecting tank, a pressure sensor and a processor, wherein the support membrane is arranged on the support membrane; when the measured pressure value exceeds the preset pressure value threshold value, the processor calculates the strength values and the washing duration of the backwashing water pump and the backwashing air pump according to the measured pressure value and the preset pressure value standard value, and after the backwashing air pump is adopted to continuously aerate the dynamic membrane filtration system to enable the loosening value of the dynamic membrane layer above the support membrane to reach the preset condition, the backwashing water pump is adopted to wash away the loosening membrane layer, so that the error between the transmembrane pressure of the washed dynamic membrane and the pressure value standard value is smaller than the preset error threshold value. The invention has high back washing efficiency and high dynamic membrane recovery speed, and indirectly improves the operation efficiency of the whole dynamic membrane filtration system.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a continuous dynamic membrane system operation device and a working method thereof.
Background
The dynamic membrane filtration technology is a new membrane separation technology and is mainly applied to sewage treatment. The core of the dynamic membrane filtration technology is the formation of a dynamic membrane layer, a supporting membrane component of the dynamic membrane filtration technology is usually made of cheap macroporous microgrid materials, and a dynamic membrane layer is gradually formed by pre-coating or gradually intercepting micro-particulate matters or pre-coating materials in sewage on the supporting membrane, so that a good separation effect is obtained.
The dynamic membrane technology can be divided into three stages according to the change rule of transmembrane pressure and effluent turbidity: forming stage, filtering stage and back flushing stage. When the water inlet flow and the water inlet concentration are kept constant, the transmembrane pressure and the filtration time are in a certain linear relationship. The thickness of the mud cake layer is gradually increased along with the filtration, which shows that the transmembrane pressure difference is gradually increased, when the thickness is increased to a certain value, the filtration of the period needs to be ended, and the back washing operation is carried out, so that the regeneration of the dynamic membrane is realized, and the operation of the next period is started.
The back washing mode of the prior dynamic membrane component mainly comprises gas washing and off-line water washing. The air washing is to arrange an aeration system below the membrane component, realize the washing and cleaning effect of the dynamic membrane through aeration, slow down membrane pollution, but the aeration time is longer, and the system cleaning time is prolonged. And part of the device systems adopt a continuous aeration mode to delay membrane pollution, and obviously, the energy consumption is higher. The off-line water washing is to take out the blocked membrane component and directly wash the membrane component by high-pressure water flow to remove membrane pollution, so that the process is more complicated and the intermittent time is long. For example, in patent No. CN2403733Y, a dynamic membrane water treatment apparatus is reported, which is provided with a dissolved air tank and a recirculation tank, and reduces membrane pollution by loosening filter cakes by releasing dissolved air in sewage, but the dynamic membrane water treatment apparatus has more steps of dissolved air and recirculation, long operation pause time and complicated operation. Patent CN1843971A reports a backwashing operation method of a dynamic membrane bioreactor, and the invention adopts an uninterrupted aeration mode to slow down the formation rate of a dynamic membrane, but has long operation intermittence time and large power consumption.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the continuous dynamic membrane system operation device and the working method thereof, the backwashing efficiency is high, the dynamic membrane recovery speed is high, and the operation efficiency of the whole dynamic membrane filtration system is indirectly improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a continuous dynamic membrane system operation device is arranged on a dynamic membrane filtration system and comprises a support membrane, a water inlet collecting tank, a peristaltic pump, a water inlet, a water outlet collecting tank, a backwashing water pump, a backwashing air pump, a backwashing water inlet, a backwashing water outlet, a backwashing water collecting tank, a pressure sensor and a processor;
the support membrane is horizontally arranged in the dynamic membrane filtration system;
the sewage to be treated is loaded in the water inlet collecting tank and is conveyed to the dynamic membrane filtration system through the peristaltic pump and the water inlet in sequence, the water inlet is positioned above the supporting membrane, and the water inlet is provided with a first on-off switch; the sewage to be treated passes through the support membrane, dynamic membrane layers are gradually formed in the support membrane and on the surface of the support membrane, the treated sewage is conveyed to the water outlet water collecting tank through the water outlet, the water outlet is positioned at the bottom of the dynamic membrane filtration system, and a second on-off switch is arranged at the water outlet;
the backwashing water pump and the backwashing air pump are connected to the water outlet through a backwashing water inlet, and a third on-off switch is installed at the backwashing water inlet; the backwashing water collecting tank is connected into the dynamic membrane filtering system through a backwashing water outlet, the backwashing water outlet is positioned above the supporting membrane and close to the upper surface of the supporting membrane, and a fourth on-off switch is arranged at the backwashing water outlet;
the pressure sensor is arranged in the dynamic membrane filtration system and is used for detecting transmembrane pressure in the dynamic membrane filtration system in real time;
the processor receives an actual measurement pressure value fed back by the pressure sensor, when the actual measurement pressure value exceeds a preset pressure value threshold value, the strength values and the washing duration of the backwashing water pump and the backwashing air pump are calculated according to the actual measurement pressure value and a preset pressure value standard value, after the backwashing air pump is adopted to continuously aerate the dynamic membrane filtering system to enable the loosening value of the dynamic membrane layer above the supporting membrane to reach a preset condition, the loosening membrane layer is washed away by the backwashing water pump, and the error between the transmembrane pressure of the washed dynamic membrane and the pressure value standard value is smaller than a preset error threshold value.
In order to optimize the technical scheme, the specific measures adopted further comprise:
further, after the processor continuously aerates the dynamic membrane filtration system by using the backwashing air pump to enable the loosening value of the dynamic membrane layer above the support membrane to reach a preset condition, the processor washes away the loosening membrane layer by using the backwashing water pump, and the process that the error between the transmembrane pressure of the washed dynamic membrane and the standard value of the pressure value is smaller than the preset error threshold value comprises the following steps:
s1, closing the first on-off switch and the second on-off switch to close the water inlet and the water outlet;
s2, turning on a fourth on-off switch, and discharging untreated sewage in the dynamic membrane filtration system to a backwashing water collection tank;
s3, opening a third on-off switch, starting a backwashing air pump, continuously aerating the dynamic membrane filtration system to enable the loosening value of the dynamic membrane layer above the support membrane to reach a preset condition, and closing the backwashing air pump;
s4, starting the backwash water pump to reversely feed water to the dynamic membrane filtration system, washing off the loose membrane layer, and closing the backwash water pump;
s5, judging whether the error between the transmembrane pressure of the flushed dynamic membrane and the pressure value standard value is smaller than a preset error threshold value, if not, returning to the step S3 to flush the dynamic membrane again, otherwise, entering the step S6;
and S6, closing the third on-off switch and the fourth on-off switch, opening the first on-off switch and the second on-off switch, and continuing sewage filtration treatment.
Further, the process of calculating the strength values and the washing duration of the backwashing water pump and the backwashing air pump according to the measured pressure value and the preset pressure value standard value comprises the following steps:
acquiring the optimal backwashing duration corresponding to the process; dividing the optimal backwashing duration into aeration time and flushing time;
and calculating to obtain the strength of the backwashing air pump according to the actually measured pressure value and the aeration time, and calculating to obtain the strength of the backwashing water pump according to the actually measured pressure value, the strength of the backwashing air pump and the flushing time.
Based on the continuous dynamic membrane system operation device, the invention also provides a working method of the continuous dynamic membrane system operation device, and the working method comprises the following steps:
s01, initializing the whole operation device, closing the third on-off switch and the fourth off-off switch, and opening the first on-off switch and the second on-off switch;
s02, leading the sewage to be treated into a dynamic membrane filtration system through a water inlet, wherein after the sewage passes through a support membrane, micro-particles contained in the sewage are gradually intercepted and enriched on the surface of the support membrane, the dynamic membrane layer on the support membrane is gradually extruded and compacted under the action of water pressure, and the sewage after filtration flows to an effluent water collecting tank through a water outlet under the action of gravity flow;
s03, detecting the transmembrane pressure in the dynamic membrane filtration system in real time;
s04, judging the measured pressure value, if the measured pressure value exceeds the preset pressure value threshold value, calculating the strength values and the washing duration of the backwashing water pump and the backwashing air pump according to the measured pressure value and the preset pressure value standard value, after continuously aerating the dynamic membrane filtration system by the backwashing air pump to enable the loosening value of the dynamic membrane layer above the support membrane to reach the preset condition, washing off the loosening membrane layer by the backwashing water pump to enable the error between the transmembrane pressure of the washed dynamic membrane and the pressure value standard value to be smaller than the preset error threshold value, returning to the step S02, otherwise, directly returning to the step S02.
The invention has the beneficial effects that:
1. the operation flow is greatly simplified, the complicated flow is avoided, and the backwashing efficiency is greatly improved.
2. Compared with the mode of uninterrupted aeration, the aeration intensity and the aeration time are reduced, thereby reducing the operation energy consumption cost.
3. The method can be carried out on line, the operation of the reactor is not influenced, the damage degree of the dynamic membrane is reduced through the regulation of the strength of the first gas washing and the second water washing and the combination mode, so that the regeneration time of the dynamic membrane is shortened, and the filtering time and the operation efficiency of the dynamic membrane system can be obviously improved.
Drawings
Fig. 1 is a schematic configuration diagram of a continuous dynamic membrane system operation apparatus of the present invention.
In the figure, 1-a water inlet collecting tank, 2-a peristaltic pump, 3-a water inlet, 4-a support membrane and a dynamic membrane layer, 5-a backwashing water outlet, 6-a backwashing water inlet, 7-a water outlet, 8-a water outlet collecting tank, 92-a backwashing water pump, 91-a backwashing air pump and 10-a backwashing water collecting tank.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
It should be noted that the terms "upper", "lower", "left", "right", "front", "back", etc. used in the present invention are for clarity of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not limited by the technical contents of the essential changes.
Referring to fig. 1, the invention provides a continuous dynamic membrane system operation device, which is arranged on a dynamic membrane filtration system and comprises a support membrane 4, a water inlet water collecting tank 1, a peristaltic pump 2, a water inlet 3, a water outlet 7, a water outlet water collecting tank 8, a backwashing water pump 92, a backwashing air pump 91, a backwashing water inlet air inlet 6, a backwashing water outlet 5, a backwashing water collecting tank 10, a pressure sensor and a processor.
The support membrane 4 is horizontally mounted within the dynamic membrane filtration system.
The water inlet collecting tank 1 is filled with sewage to be treated, the sewage to be treated is conveyed into the dynamic membrane filtration system through the peristaltic pump 2 and the water inlet 3 in sequence, the water inlet 3 is positioned above the support membrane 4, and the first on-off switch is arranged at the water inlet 3; the sewage to be treated passes through the support membrane 4, dynamic membrane layers are gradually formed in the support membrane 4 and on the surface of the support membrane 4, the treated sewage is conveyed to the water outlet water collecting tank 8 through the water outlet 7, the water outlet 7 is positioned at the bottom of the dynamic membrane filtration system, and a second on-off switch is installed at the water outlet 7.
The backwashing water pump 92 and the backwashing air pump 91 are connected to the water outlet 7 through the backwashing water inlet 6, and a third on-off switch is installed at the backwashing water inlet 6; the backwashing water collecting tank 10 is connected into the dynamic membrane filtration system through a backwashing water outlet 5, the backwashing water outlet 5 is positioned above the supporting membrane 4 and close to the upper surface of the supporting membrane 4, and a fourth on-off switch is arranged at the backwashing water outlet 5.
The pressure sensor is arranged in the dynamic membrane filtration system and used for detecting transmembrane pressure in the dynamic membrane filtration system in real time.
The processor receives an actual measurement pressure value fed back by the pressure sensor, when the actual measurement pressure value exceeds a preset pressure value threshold value, the strength values and the washing duration of the backwashing water pump 92 and the backwashing air pump 91 are calculated according to the actual measurement pressure value and a preset pressure value standard value, after the backwashing air pump 91 is adopted to continuously aerate the dynamic membrane filtration system to enable the loosening value of the dynamic membrane layer above the support membrane 4 to reach a preset condition, the loosening membrane layer is washed away by adopting the backwashing water pump 92, and the error between the transmembrane pressure of the washed dynamic membrane and the pressure value standard value is smaller than a preset error threshold value.
As shown in fig. 1, the operation process of the continuous dynamic membrane operation device is as follows:
1. sewage to be treated (such as turbid liquid prepared by diatomite) is introduced into the device from the water inlet collecting tank 1 through the water inlet 3 by using the peristaltic pump 2, and the inflow sewage enters the dynamic membrane filtration system under the action of gravity.
2. Sewage is after supporting rete 4, and the particulate matter that wherein contains holds back and the enrichment on supporting rete 4 surfaces gradually, and under the water pressure effect, the dynamic rete on supporting rete 4 extrudes gradually and closely knit, goes out the water and flows out the device automatically under the gravity flow effect, and the particulate matter in the sewage is held back to last behind the dynamic rete formation, and the play water is discharge apparatus behind delivery port 7 to the processing of sewage and the separation of particulate matter have been realized. With the continuous formation of the dynamic film layer, the separation effect is gradually improved.
3. The pressure value in the dynamic membrane filtration system is detected by a pressure sensor, when the transmembrane pressure in the device exceeds a set value, a water inlet 3 and a water outlet 7 are closed, a backwashing water outlet 5 is opened to discharge sewage in the device, then a backwashing air inlet 6 is opened to aerate the device, a supporting layer is washed to loosen a dynamic membrane layer above the supporting layer, after a period of aeration, water is reversely introduced into the device to wash the supporting layer, after a period of washing, the sub-membrane layer on the upper part of the supporting membrane is basically removed, the transmembrane pressure returns to a stable operation state, the backwashing air inlet 6 and the backwashing water outlet 5 are closed, the water inlet 3 and the water outlet 7 are opened, the dynamic membrane regeneration stage is started, and the operation of the next.
Preferably, the process of calculating the strength values and the washing duration of the backwash water pump and the backwash air pump according to the actually measured pressure value and the preset pressure value standard value comprises the following steps:
acquiring the optimal backwashing duration corresponding to the process; dividing the optimal backwashing duration into aeration time and flushing time;
and calculating to obtain the strength of the backwashing air pump according to the actually measured pressure value and the aeration time, and calculating to obtain the strength of the backwashing water pump according to the actually measured pressure value, the strength of the backwashing air pump and the flushing time.
In the general domestic water and sewage filtering process, the backwashing time is preferably within 20-30 minutes, and in the running process of the dynamic membrane device, when the backwashing is needed, the backwashing air pump provides 0.072-1.08 m3/m2H, crushing the gas into micro bubbles when the gas passes through the membrane substrate, damaging the filter cake layer by the micro bubbles, and basically damaging the filter cake layer after air washing for 3-5 min; then the back washing water pump provides 0.27-0.54 m3/m2H, washing with water for 5-10 min to pollute the basic discharge device, and recovering the membrane flux.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (4)
1. A continuous dynamic membrane system operation device is characterized in that the operation device is arranged on a dynamic membrane filtration system and comprises a support membrane, a water inlet water collecting tank, a peristaltic pump, a water inlet, a water outlet water collecting tank, a backwashing water pump, a backwashing air pump, a backwashing water inlet air inlet, a backwashing water outlet, a backwashing water collecting tank, a pressure sensor and a processor;
the support membrane is horizontally arranged in the dynamic membrane filtration system;
the sewage to be treated is loaded in the water inlet collecting tank and is conveyed to the dynamic membrane filtration system through the peristaltic pump and the water inlet in sequence, the water inlet is positioned above the supporting membrane, and the water inlet is provided with a first on-off switch; the sewage to be treated passes through the support membrane, dynamic membrane layers are gradually formed in the support membrane and on the surface of the support membrane, the treated sewage is conveyed to the water outlet water collecting tank through the water outlet, the water outlet is positioned at the bottom of the dynamic membrane filtration system, and a second on-off switch is arranged at the water outlet;
the backwashing water pump and the backwashing air pump are connected to the water outlet through a backwashing water inlet, and a third on-off switch is installed at the backwashing water inlet; the backwashing water collecting tank is connected into the dynamic membrane filtering system through a backwashing water outlet, the backwashing water outlet is positioned above the supporting membrane and close to the upper surface of the supporting membrane, and a fourth on-off switch is arranged at the backwashing water outlet;
the pressure sensor is arranged in the dynamic membrane filtration system and is used for detecting transmembrane pressure in the dynamic membrane filtration system in real time;
the processor receives an actual measurement pressure value fed back by the pressure sensor, when the actual measurement pressure value exceeds a preset pressure value threshold value, the strength values and the washing duration of the backwashing water pump and the backwashing air pump are calculated according to the actual measurement pressure value and a preset pressure value standard value, after the backwashing air pump is adopted to continuously aerate the dynamic membrane filtering system to enable the loosening value of the dynamic membrane layer above the supporting membrane to reach a preset condition, the loosening membrane layer is washed away by the backwashing water pump, and the error between the transmembrane pressure of the washed dynamic membrane and the pressure value standard value is smaller than a preset error threshold value.
2. The continuous dynamic membrane system operating device according to claim 1, wherein the processor washes off the loosened membrane layer by using the backwash water pump after continuously aerating the dynamic membrane filtration system by using the backwash air pump to make the loosened membrane layer above the support membrane reach a preset condition, and the process of making the error between the transmembrane pressure of the washed dynamic membrane and the standard value of the pressure value smaller than a preset error threshold value comprises the following steps:
s1, closing the first on-off switch and the second on-off switch to close the water inlet and the water outlet;
s2, turning on a fourth on-off switch, and discharging untreated sewage in the dynamic membrane filtration system to a backwashing water collection tank;
s3, opening a third on-off switch, starting a backwashing air pump, continuously aerating the dynamic membrane filtration system to enable the loosening value of the dynamic membrane layer above the support membrane to reach a preset condition, and closing the backwashing air pump;
s4, starting the backwash water pump to reversely feed water to the dynamic membrane filtration system, washing off the loose membrane layer, and closing the backwash water pump;
s5, judging whether the error between the transmembrane pressure of the flushed dynamic membrane and the pressure value standard value is smaller than a preset error threshold value, if not, returning to the step S3 to flush the dynamic membrane again, otherwise, entering the step S6;
and S6, closing the third on-off switch and the fourth on-off switch, opening the first on-off switch and the second on-off switch, and continuing sewage filtration treatment.
3. The continuous dynamic membrane system running device according to claim 1, wherein the process of calculating the strength values and the washing duration of the backwash water pump and the backwash air pump according to the measured pressure value and the preset pressure value standard value comprises the following steps:
acquiring the optimal backwashing duration corresponding to the process; dividing the optimal backwashing duration into aeration time and flushing time;
and calculating to obtain the strength of the backwashing air pump according to the actually measured pressure value and the aeration time, and calculating to obtain the strength of the backwashing water pump according to the actually measured pressure value, the strength of the backwashing air pump and the flushing time.
4. A method of operation based on the continuous dynamic membrane system operation apparatus as claimed in any one of claims 1 to 3, characterized in that the method of operation comprises the steps of:
s01, initializing the whole operation device, closing the third on-off switch and the fourth off-off switch, and opening the first on-off switch and the second on-off switch;
s02, leading the sewage to be treated into a dynamic membrane filtration system through a water inlet, wherein after the sewage passes through a support membrane, micro-particles contained in the sewage are gradually intercepted and enriched on the surface of the support membrane, the dynamic membrane layer on the support membrane is gradually extruded and compacted under the action of water pressure, and the sewage after filtration flows to an effluent water collecting tank through a water outlet under the action of gravity flow;
s03, detecting the transmembrane pressure in the dynamic membrane filtration system in real time;
s04, judging the measured pressure value, if the measured pressure value exceeds the preset pressure value threshold value, calculating the strength values and the washing duration of the backwashing water pump and the backwashing air pump according to the measured pressure value and the preset pressure value standard value, after continuously aerating the dynamic membrane filtration system by the backwashing air pump to enable the loosening value of the dynamic membrane layer above the support membrane to reach the preset condition, washing off the loosening membrane layer by the backwashing water pump to enable the error between the transmembrane pressure of the washed dynamic membrane and the pressure value standard value to be smaller than the preset error threshold value, returning to the step S02, otherwise, directly returning to the step S02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011439369.4A CN112573623A (en) | 2020-12-11 | 2020-12-11 | Continuous dynamic membrane system operation device and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011439369.4A CN112573623A (en) | 2020-12-11 | 2020-12-11 | Continuous dynamic membrane system operation device and working method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112573623A true CN112573623A (en) | 2021-03-30 |
Family
ID=75131072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011439369.4A Pending CN112573623A (en) | 2020-12-11 | 2020-12-11 | Continuous dynamic membrane system operation device and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112573623A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292202A (en) * | 2021-05-24 | 2021-08-24 | 南京信息工程大学 | Filter backwashing wastewater treatment device based on dynamic membrane and use method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843971A (en) * | 2006-04-19 | 2006-10-11 | 山东大学 | Back-flushing operation method of dynamic membrane bioreactor |
| CN102557197A (en) * | 2012-03-05 | 2012-07-11 | 同济大学 | Method for further reducing effluent turbidity in process of treating raw water by using diatomite dynamic membrane |
| CN102951734A (en) * | 2012-11-26 | 2013-03-06 | 同济大学 | Wastewater treatment device with anaerobic dynamic membrane reactor |
| CN108380046A (en) * | 2018-03-07 | 2018-08-10 | 同济大学 | A kind of dynamic film sewage treatment system for the processing of lavatory fecaluria |
-
2020
- 2020-12-11 CN CN202011439369.4A patent/CN112573623A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843971A (en) * | 2006-04-19 | 2006-10-11 | 山东大学 | Back-flushing operation method of dynamic membrane bioreactor |
| CN102557197A (en) * | 2012-03-05 | 2012-07-11 | 同济大学 | Method for further reducing effluent turbidity in process of treating raw water by using diatomite dynamic membrane |
| CN102951734A (en) * | 2012-11-26 | 2013-03-06 | 同济大学 | Wastewater treatment device with anaerobic dynamic membrane reactor |
| CN108380046A (en) * | 2018-03-07 | 2018-08-10 | 同济大学 | A kind of dynamic film sewage treatment system for the processing of lavatory fecaluria |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113292202A (en) * | 2021-05-24 | 2021-08-24 | 南京信息工程大学 | Filter backwashing wastewater treatment device based on dynamic membrane and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1317056C (en) | Method for rinsing membrane-filtering unit of hollow fiber | |
| US7833420B2 (en) | Method for cleaning reclaimed water reuse device | |
| CN108911222A (en) | Film process equipment and its control method for Treated sewage reusing | |
| KR100843656B1 (en) | Advanced drinking water treatment system using two-stage submerged membranes | |
| US10604884B2 (en) | Washing machine control method and washing machine | |
| CN216837373U (en) | Intelligent filtering system integrating ceramic membrane micro cross flow filtering and dead end filtering | |
| CN112573623A (en) | Continuous dynamic membrane system operation device and working method thereof | |
| JP3984145B2 (en) | Cleaning method for solid-liquid separator | |
| CN102249372A (en) | Immersed ultrafiltration and device and preparation system of pure water | |
| CN105350266A (en) | Washing machine and method for back-flushing pre-filter of washing machine | |
| CN110787512A (en) | Pickling process for metal filter element | |
| CN214167589U (en) | Ceramic membrane chemical cleaning waste liquid treatment device | |
| JP3700932B2 (en) | Method and apparatus for cleaning filter using ozone | |
| CN113402058B (en) | Purifier is used in municipal sewage treatment convenient to sample | |
| CN115364536A (en) | Filter chamber backwashing system, filter chamber system and backwashing method | |
| CN205099464U (en) | Sewage treatment device based on MBR membrane is used | |
| CN106861257A (en) | Continuous raw streaming active sand filtration treatment device and filter method | |
| CA2588005A1 (en) | Filtering system for water and waste water | |
| CN219839573U (en) | Denitrification deep bed filter tank | |
| CN212894102U (en) | Nitrogen control system is driven in deep bed filtering pond of denitrification | |
| CN219231536U (en) | Active sand filter | |
| CN215102516U (en) | Integrated system for removing hard silicon and silicon of ceramic flat membrane | |
| JP4124957B2 (en) | Filter body washing method and apparatus | |
| CN103896454B (en) | Water treatment integrating device | |
| CN219194715U (en) | Automatic prepositive ultrafiltration back flushing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210330 |